JumboMax Golf Grips: What They Do and Who They’re For

A JumboMax grip is an oversized golf grip built to be bigger than any standard grip on the market, sized in graduated steps so a player can dial in exactly how much extra diameter their hands need. The bigger surface area lets you hold the club with lighter pressure, which is the whole point: less squeezing, steadier hands, and a clubface that stays more stable through impact.

JumboMax didn’t invent the idea of a fat grip. Golf Pride, Winn, and SuperStroke all sell oversize options too. What sets JumboMax apart is the range. Instead of one “oversize” step above standard, JumboMax runs eight sizes, from Standard Oversize at plus 1/16 of an inch all the way to X-Large at plus 3/8 of an inch. That range is why the brand built its own sizing system instead of borrowing the industry’s usual small, midsize, oversize labels.

How much bigger are JumboMax grips than a standard grip?

A standard golf grip has a butt diameter of roughly 0.9 inches. JumboMax starts above that and keeps climbing. The company’s own chart lists Standard Oversize at plus 1/16 inch, Standard Jumbo at plus 1/8 inch, X-Small at plus 3/16 inch, Small at plus 1/4 inch, Medium at plus 5/16 inch, Large at plus 11/32 inch, and X-Large at plus 3/8 inch. On the Tour Series line, that works out to a butt diameter around 1.08 inches for Extra Small and up to about 1.43 inches for Extra Large, roughly 50 percent thicker than a standard grip at the top end.

Sizing runs off glove size as a starting point, then gets refined from there. Here’s the quickest way to land on a size before you order:

1. Check your glove size. A medium glove usually points to X-Small or Small, a large glove points to Medium, and an XX-Large or bigger glove points to Large or X-Large.
2. Measure your lead hand. Lay it flat, fingers together, and measure from the wrist crease to the tip of your middle finger. This confirms or adjusts the glove-size estimate.
3. Adjust for your shot shape. Size up if you fight a hook or snap hook. Size down if you fight a slice or fade.
4. Run the free JumboMax app, or the online tool if you don’t have an iPhone or iPad. It scans 21 points on your hand with the TrueDepth camera and gives you a size based on a tour-tested algorithm plus a few questions about your game.

Between two sizes? JumboMax lets you return any unused grip for credit toward a different size, so it’s worth ordering one grip to test on a single club before committing to a full set of thirteen.

What are the different JumboMax grip models?

JumboMax sells five swing-grip lines, and they share the same sizing but differ in weight, texture, and feel.

There’s also a separate putter grip lineup, so a golfer can go oversized on the flat stick without switching every swing grip. A pistol-style oversize putter grip quiets the small muscles in the hands and wrists during the stroke, which is a common fix for the yips, without changing anything about the swing grips on the rest of the bag.

Weight varies a fair amount between lines, and that matters more than most golfers expect. A Tour Series Extra Small runs about 90 grams, while a UltraLite in the same size runs closer to 43 grams. Put a Tour Series grip on a driver built for a light, whippy shaft and the swing weight climbs noticeably. Put an UltraLite on instead and the swing weight barely moves. If you’re happy with how your clubs are currently balanced, that weight difference, more than sizing, should steer which line you pick.

How do JumboMax grips actually affect your swing?

Independent testing by GolfTest USA and Golf Etc, commissioned by JumboMax, measured clubhead speed, launch angle, spin, and carry distance with JumboMax grips against standard grips on the same players and clubs. The tested group gained ground in most categories, including faster clubhead speed and longer carry distance, though results like this always vary by player and swing.

The mechanism is straightforward even without a lab. A bigger grip needs less squeezing force to hold securely. Less squeezing means less tension traveling up through the forearms and shoulders, and less tension usually means a freer, faster release through the ball. A looser grip pressure also tends to quiet down excess hand rotation, so the clubface arrives squarer at impact more often.

The Tour Series line adds a second effect: extra mass built into the grip itself shifts the balance point of the club closer to your hands. That counterweighting can make the swing feel smoother and the tempo easier to repeat, though it also changes how the club head feels through the swing, lighter and less “there,” which takes some players a round or two to adjust to.

Who benefits most from a bigger grip?

Golfers with arthritis or other joint pain in the hands and wrists are the clearest fit. A larger grip needs less gripping force, which takes real strain off swollen or stiff finger joints. Senior golfers dealing with reduced hand strength see a similar benefit.

Big-handed players are the other obvious group. If your fingertips barely reach the pad of your palm on a standard grip, you’re squeezing harder than you need to just to keep the club secure, and sizing up removes that problem.

Golfers who fight a hook or a snap hook also tend to do well with a size up. A hook usually comes from the hands over-rotating and closing the face too fast, and a bigger grip that quiets hand action can straighten that out.

Who should be careful with a JumboMax grip?

Anyone who already fights a slice or a fade should be cautious about sizing up too far. Since a larger grip reduces hand and forearm rotation, it can leave the clubface open longer through impact, and an open face at impact is exactly what causes a slice in the first place. A player in that situation may want to stay closer to Standard Oversize or Standard Jumbo rather than jumping straight to Large or X-Large.

Players who lean on shot-shaping, working the ball left or right on demand, often report that the extra size makes that kind of hand manipulation harder. And golfers who chip and putt with a lot of feel around the greens sometimes find the added bulk changes touch shots more than it changes full swings, which is part of why JumboMax sells its putter grips as a separate choice rather than bundling them in.

What do JumboMax grips cost, and how do you get them installed?

Pricing runs by model. Comfort Wrap grips run about $12 each, Tour Series and STR8 Tech run roughly $14 to $16 each, and UltraLite and Zen Lite run about $16 to $17 each. A full 13-grip set for a whole bag lands somewhere between $185 and $215 depending on the model, before installation. That’s noticeably more than a set of standard grips, which usually run $6 to $10 each, so factor the difference into your budget before you commit a full bag rather than one or two clubs.

Installing a JumboMax grip uses the same process as any other golf grip: strip the old grip and tape, wrap new double-sided grip tape around the shaft, apply grip solvent, and slide the new grip on before the solvent sets. Because the inside core diameter stays at a standard 0.600 inch across every JumboMax size, the installation itself isn’t any harder than a standard regrip, though the bigger exterior means you’ll want a slightly wider vise clamp or extra padding to avoid crushing the grip while you work. Most golfers who aren’t comfortable doing it themselves have a local shop or club fitter handle it for a small labor fee per club.

JumboMax grips are USGA-conforming, so there’s no rules issue using them in competition, including sanctioned amateur and long-drive events. You can find your recommended size and shop by model on JumboMax’s own Online Grip Fitting Tool, and the brand answers conformance and sizing questions directly on its equipment FAQ page.

Conclusion

JumboMax grips are oversized swing grips sold in eight graduated sizes, built to cut grip pressure and steady the clubface through impact. They tend to help golfers with arthritis, big hands, or a hook the most, and they’re worth a size-down or a pass for players fighting a slice or leaning on shot-shaping and feel. Start with your glove size, confirm it with JumboMax’s fitting tool, and pick a model based on how much extra weight and texture you want in your hands.

Frequently asked questions

Do any PGA Tour players actually use JumboMax grips?

Yes. Bryson DeChambeau plays JumboMax UltraLite grips and has used them through multiple PGA Tour wins, including a U.S. Open title, which is part of why the brand’s visibility jumped in recent years.

Are JumboMax grips legal for tournament play?

Yes. The USGA has ruled JumboMax’s oversized grips conforming, so they’re legal in sanctioned tournaments, long-drive events, and everyday competitive rounds.

Will a JumboMax grip fix my slice?

It depends on the cause. If your slice comes from tension and an overactive release, a bigger grip can help. If it comes from a face that’s already open at impact, a larger grip can make it worse by further limiting hand rotation.

How do I know what JumboMax size to order?

Start with your glove size, use JumboMax’s free app or online fitting tool for a more precise recommendation, and size up if you hook the ball or size down if you slice it.

Can I install JumboMax grips myself at home?

Yes. The core diameter is a standard 0.600 inch, so the process is the same as any regrip job: solvent, tape, and a firm push-on with the new grip, though a wider clamp helps with the larger exterior.

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